#shadowing
{
  display: none;
  position: fixed;
  top: 0%;
  left: 0%;
  width: 100%;
  height: 100%;
  background-color: #CCA;
  z-index:10;
  opacity:0.5;
  filter: alpha(opacity=50);
}
#soumis
{
  display: none;
}
